Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5646199 | Composition for mold | Akira Yoshida, Kazuhiko Kiuchi, Naoki Kyochika, Hitoshi Funada | 1997-07-08 |
| 5169880 | Process for making foundry sand mold | Akira Yoshida, Shigeo Nakai, Naoki Kyochika | 1992-12-08 |